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Product Description
The Heat Shrink Tubing 4mm Black is a professional-grade insulation and protection accessory designed for electronics work, wiring harnesses, solder joints, and custom cable management. Featuring a 4mm pre-shrink diameter that contracts securely upon the application of heat, this flexible polyolefin tubing provides electrical insulation, mechanical abrasion protection, and strain relief for medium-gauge wires and multi-wire bundles.
Essential for insulating spliced connections, protecting cable entries, and organizing custom robotics or power wiring, this durable heat shrink tubing combines a clean professional finish with easy application.
🔥 Heating Tip: Use a heat gun or a controlled lighter flame moving evenly back and forth along the tubing to shrink it uniformly without scorching or melting the plastic.
Technical & Architectural Highlights
4mm Initial Diameter: Ideal size for covering slightly thicker wire splices, small terminal lugs, resistor bundles, or dual-wire runs.
2:1 Shrink Ratio: Contracts securely around wires and components upon heating for a snug, permanent, and insulating fit.
Flexible Polyolefin Material: Provides reliable electrical insulation, flame resistance, and mechanical protection against wear and tear.
Professional Black Finish: Standard black color offers a clean, discreet appearance for finished commercial or DIY electronic assemblies.
Technical Specifications
| Parameter | Value / Specification |
| Product Type | Polyolefin Heat Shrink Tubing |
| Inside Diameter (As Supplied) | 4 mm |
| Color | Black |
| Shrink Ratio | Approx. 2:1 |
| Operating Temperature | -55°C to +125°C |
| Minimum Shrink Temperature | Approx. +70°C |
| Full Recovery Temperature | Approx. +110°C |
Applications
Wire Splicing & Joint Insulation: Protecting soldered or crimped wire connections from short circuits and environmental corrosion.
Cable Management & Harnessing: Organizing and bundling multi-wire connections in robotics, automotive, and control panels.
Strain Relief: Providing mechanical support at wire entry points for connectors and switches.
What’s in the Box
Heat Shrink Tubing 4mm Black (Cut to ordered length, e.g., 1 Meter or specified roll).
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